1. disconnect the electrical system of the trailer - towing vehicle.

2. unscrew the screws securing the lampshade to the body or lever the lampshade in case it it is pressed in.

3. replace the bulb with a new one with the same parameters.

4. put on again the lampshade and fasten with screws to the body (or push), in the same way as when dismantling.

5. then connect the electrical system of the trailer - towing vehicle and check the correct operation of the lights.

In case of failure lamp with a non-replaceable light source (e.g., LED-type lamps), contact the Contact the manufacturer of the trailer.